pretty cool drawings, i think the drawing of the girl works better. but couple of tip, instead of doing shading look at the planes of hte head more, especially with the nose, lips, and chin, because the only reason the values on a form change is because the planes change. so unless u dont have the planes right the shading applied is going to look wrong. Also look at how far the clavicle bones go out. George bridgeman books might help, check them out. also are those from photograph or real life. alright hope it helps.